DownloadUtil.java

package com.cesgroup.bdc.util;

import javax.servlet.http.HttpServletRequest;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

public class DownloadUtil {
  public static String getContentDisposition(HttpServletRequest request, String fileName) throws UnsupportedEncodingException {
    String contentDisposition = null;
    String userAgent = request.getHeader("User-Agent");
    if (userAgent.toLowerCase().indexOf("firefox") > -1) {
      String ss = URLEncoder.encode(fileName, "UTF-8");
      contentDisposition = "attachment;filename*=UTF-8'zh_cn'" + ss;
    } else {
      String ss = new String(fileName.getBytes("GBK"), "ISO-8859-1");
      contentDisposition = "attachment;filename=" + ss;
    }
    return contentDisposition;
  }
}